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NASA's Mars Sample Return Program struggles to get off the drawing board

(2024/03/04)


NASA's Office of Inspector General, the agency's auditor, has found that the Mars Sample Return Program is struggling to get off the drawing board, never mind the launchpad.

The program (MSR) requires three craft:

An Earth Return Orbiter (ERO) that will fly to Mars, and eventually back to Earth;

A Sample Retrieval Lander (SRL) that will land on Mars and collect samples prepared by the Perseverance Rover – no small chore as they're not in a neat pile – before transferring them to a …

… Mars Ascent Vehicle that will take the samples to the ERO, before it returns to Earth.

None of the three are anywhere near being built, because designs aren't close to being finalized.

And as the OIG found in an [1]audit [PDF] of the program issued late last week, MSR "is facing significant obstacles completing its Formulation Phase – establishing a stable design with realistic cost and schedule estimates – in a timely and effective manner."

The Formulation Phase is running at least seven months late, mostly due to known process problems that NASA has experienced on other flagship missions.

[2]

Those issues and other problems have seen mission budgets blow out from initial estimates of $2.5 billion to $7.4 billion. The OIG thinks that "raises questions about the affordability of the program."

[3]

[4]

One aspect of the MSR that was hoped to make it easier is collaboration between NASA and the European Space Agency (ESA) – but that's not going well.

The OIG found the two agencies "are experiencing issues related to schedule transparency, asynchronous design progress, and mass allocation, which appear to stem from differing operational approaches, acquisition strategies, and agency funding mechanisms."

[5]

The issues outlined above will come into harsh relief this month, as NASA is on the cusp of a Key Decision Point (KDP-C) – a review at which it will consider whether to proceed from formulation to development of the MSR.

The OIG isn't sure NASA should take that step, because it's not certain the aerospace agency will reach KDP-C with an accurate budget.

Even if NASA can come up with a good estimate, the OIG fears MSR's budget could be so large that it impacts other NASA missions.

[6]72 flights later and a rotor blade short, Mars chopper loses its fight with physics

[7]WATSON picks up slack on Mars for SHERLOC as Perseverance gadgets show age

[8]Save the Mars Sample Return mission, plead Congresscritters

[9]Swarms of laser-flown bots visiting a planet light years away – and more NASA-funded projects revealed

The auditor therefore recommends that "To maximize the potential for MSR's success while also minimizing the risk of negative impacts outside of the MSR program, it is vital that NASA review the program as a comprehensive plan including a variety of mission scenarios and incorporate stakeholder interests."

Elsewhere in the review, the OIG spells that out as a suggestion to develop "a set of potential launch scenarios by KDP-C, including life-cycle cost and schedule estimates and an associated Joint Cost and Schedule Confidence Level for each," so that NASA management can consider options other than the current MSR plan.

[10]

"Only with a stable design and reliable cost and schedule estimates can NASA evaluate MSR and commit to a realistic path forward for this program with a full understanding of the potential requirements and consequences of its decision at KDP-C," the audit concludes.

NASA management largely concurred with the OIG's recommendations. With KDP-C scheduled for March 2024, it may therefore not be long before NASA's plans to retrieve rocks from Mars change … or are even scrubbed.

The latter would not stop Perseverance collecting samples. The rover has already [11]collected 23 of 38 samples – and while they are scattered across a small patch of the Martian surface, they likely won't go anywhere in a hurry. ®

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[1] https://oig.nasa.gov/docs/IG-24-008.pdf

[2] https://pubads.g.doubleclick.net/gampad/jump?co=1&iu=/6978/reg_offbeat/science&sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&tile=2&c=2ZeWp1bKKzWZPVXzUFf@OhgAAAFQ&t=ct%3Dns%26unitnum%3D2%26raptor%3Dcondor%26pos%3Dtop%26test%3D0

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[6] https://www.theregister.com/2024/02/26/nasa_ingenuity_rotor_damage/

[7] https://www.theregister.com/2024/02/15/perseverance_instrument_issues/

[8] https://www.theregister.com/2024/02/02/save_the_mars_sample_return/

[9] https://www.theregister.com/2024/01/06/nasa_futuristic_technologies/

[10] https://pubads.g.doubleclick.net/gampad/jump?co=1&iu=/6978/reg_offbeat/science&sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&tile=3&c=33ZeWp1bKKzWZPVXzUFf@OhgAAAFQ&t=ct%3Dns%26unitnum%3D3%26raptor%3Deagle%26pos%3Dmid%26test%3D0

[11] https://mars.nasa.gov/mars-rock-samples/#23

[12] https://whitepapers.theregister.com/



Seems a bit short sighted

Andy The Hat

I could not understand why the designers intentionally collected samples using a rover and left them like breadcrumbs on the surface which necessarily requires a second rover to follow the trail to collect them up for return. The only extra mass to move about is the content of the sample tubes which is not significant. Why not collect, store and recover from the final location of the rover with no requirement for a second rover which would have to travel between 1x and 2x the distance covered by the original ...?

Re: Seems a bit short sighted

John Robson

Don't want them to get stuck inside perseverance in case of that rover's failure.

Re: Seems a bit short sighted

Flocke Kroes

Perserverance is good at trundling about, selecting interesting samples and putting them in tubes. It was not designed to put tubes in the ascent vehicle because:

*) No-one knows what the ascent vehicle will be and they knew even less where Perserveance was designed.

*) The ascent vehicle will not be allowed to land anywhere near Perserverance. It wii be a long trundle to reach it and another long trundle to retreat to minimum safe distance.

*) As mentioned Perserverance may not be functional when the ascent vehicle arrives.

*) Perserverance could get stuck in a place where it is hard to recover samples.

*) There could be better technology for tube transport available when the ascent vehicle arrives.

That last one may well turn out to be a money saver. Martian helicopters have proved to be more practical than expected.

Two other barriers are the price of heavy launch and the impracticality of the planetary protection protocols. Starship will probably reach orbit real soon now. With propellant transfer it can send a large payload towards Mars. If planetary protection protocols get renegotiated into something practical Starship will be able to crash on Mars. After a few RUDs it will be able to land large payloads on Mars. Eventually it will be able to come back but that will be a long way off. In the mean time, it could deliver a flock of ascent vehicles and a swarm of helicopters.

It really would be worth putting Mars sample return on hold until cheaper general purpose technology is ready rather than designing single use tech compatible with current launch vehicle limitations.

The grass is always greener on the other side of your sunglasses.